14. If you were to use Gauss-Jordan elimination on the following linear system, what would the augmented matrix be? 3w - x = 2y + Z - 4
9x - y + z = 10
4w + 3y - 2 = 7
12x + 17 = 2y - Z + 6
o
3 -1 -2 -1
9 -1
1
A.
4
3 -1
112 -2
1 0
mom
-4
10
7
-11
3 -1 2 1-4
0 9-1 1 10
B.
4 0 3 -1 7
0 12 2 - 1 6
c.
3 -1 -2 -1 - 4
0 9-1 1 10
4 0 3-1 7
0 12 2 1 6
13-1 -2 -4
0 -1 1 10
D.
4 0 3 -1 7
0 12 -2 1 -11
TTT

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work: